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Finding the Fourth Proportional to 17,761.80, 26,630.55 and 8,406.30

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Solution

The fourth proportional to 17,761.80, 26,630.55 and 8,406.30 is: 12,603.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,761.80 : 26,630.55 = 8,406.30 : x
  2. Step 2: Convert to fraction form
    17,761.80/26,630.55 = 8,406.30/x
  3. Step 3: Cross multiply
    17,761.80x = 26,630.55 × 8,406.30
  4. Step 4: Simplify right side
    17,761.80x = 223,864,392.47
  5. Step 5: Solve for x
    x = 223,864,392.47/17,761.80
  6. Step 6: Final answer
    x = 12,603.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.